Heir to the Thrones Around the World

Prince Philippe and Princess Elisabeth of Belgium attend the Belgian Royal Family official photocall at Laeken Castle, Sept. 2, 2012 in Brussels, Belgium. Prince Philippe is the next in line to the Belgian throne followed by his daughter Elisabeth.

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Heir to the Thrones Around the World

Crown Prince Frederik of Denmark, center, with his wife Crown Princess Mary of Denmark and their children Princess Isabella, left, and Prince Christian arrive at Mogeltonder Church, May 20, 2012 in Tonder, Denmark. Frederik is not only next in line to the Danish throne, but as a descendent of Queen Victoria, he is in line for the British throne as well. Christian is second for the Danish throne.

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Heir to the Thrones Around the World

Crown Princess Victoria is next in line to the Swedish throne. Her daughter, Princess Estelle Silvia Ewa Mary, with husband Prince Daniel, right, is second in line to the throne. Victoria's brother, Prince Carl Philip is the third in line.

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Heir to the Thrones Around the World

Prince Willem-Alexander is the next in line to the Dutch throne. The Prince's daughters, Amalia, right, and Ariane, left, are second and fourth in line to the throne. Their sister, Princess Alexia, not pictured, is third in line to the throne. In 1983, the Netherlands passed a law that makes the eldest child the heir regardless of gender.

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Heir to the Thrones Around the World

Prince Haason, left, is next in line to the Norwegian throne followed by his daughter Princess Ingrid, center. Ingrid's younger brother, Prince Sverre, is third in line to the throne. Since 1990, the first born child becomes the heir to the throne despite gender.

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Heir to the Thrones Around the World

Princes Eugenie of York is the youngest daughter of Prince Andrew, Duke of York, and Sarah, Duchess of York. She is sixth in line to the British throne and the second female in line, behind her older sister Beatrice.

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Heir to the Thrones Around the World

Princess Beatrice of York is the oldest daughter of Prince Andrew, Duke of York, and Sarah, Duchess of York, and is fifth in line to the British throne. Beatrice has had limited royal duties because her studies were her main focus. The Princess graduated from Goldsmiths, University of London in 2011 with a degree in History and History of Ideas.

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Heir to the Thrones Around the World

Crown Prince Salman bin Abdul Aziz Al-Saud is next in line to the Saudi Arabian throne. He is also the Deputy Prime Minister and Minister of Defense of Saudi Arabia. King Abdullah is the current ruler of Saudi Arabia.